A Fibonacci sequence is calculated by adding the previous two members the sequence, with the first two members being both 1.
F(1) = 1, F(2) = 1, F(3) = 1,F(4) = 1, F(n>4) = F(n - 1) + F(n-2) + F(n-3) + F(n-4)
Your task is to take a number as input, and print that Fibonacci number.

Each line will contain an integers. Process to end of file.

For each case, output the result in a line.

100

4203968145672990846840663646


import java.math.BigInteger;  
import java.util.Scanner;  
public class Main{  
    /* 
     * n<7040 
     */  
    public static void main(String[] args) {  
        Scanner input=new Scanner(System.in);  
        //F f[]=new F[10000000];7040   
        BigInteger f[]=new BigInteger[8];  
        while(input.hasNext()){  
            f[1]=BigInteger.valueOf(1);  
            f[2]=BigInteger.valueOf(1);  
            f[3]=BigInteger.valueOf(1);  
            f[4]=BigInteger.valueOf(1);  
            int n=input.nextInt();  
            if(n<=4){  
                System.out.println(f[n]);  
            }  
            else {  
                for(int i=5;i<=n;i++)  
                {  
                    f[5]=f[1].add(f[2].add(f[3].add(f[4])));  
                    f[1]=f[2];  
                    f[2]=f[3];  
                    f[3]=f[4];  
                    f[4]=f[5];  
                }  
                System.out.println(f[5]);  
            }  
        }  
    }  
}